[Astronomy seminar] IMPORTANT - ROOM CHANGE!Astronomy seminar tomorrow at 10:30 in the Nordita seminar room (122:026, Nordita West)

[Astronomy seminar announcements]

A kind reminder of today seminar.
Don’t be discouraged by the walk. You will be rewarded by a very interesting seminar and exercise in the fresh air!

Angela

> On 17 Jan 2019, at 17:44, Angela Adamo <angela.adamo at astro.su.se> wrote:
> 
> Dear all,
> Due to a conflicted booking, the astronomy seminar tomorrow will take place in the Nordita seminar room (122:026, Nordita West). When you get out of the albanova main building, go to the first short building to your right. You need to have your access card to enter the nordita building. Once inside the building reach the main corridor and turn to the right, the meeting room is located at the end of the right side corridor.
> 
> Kind regards,
> 
> Angela
> 
> On 15 Jan 2019, at 10:48, Angela Adamo <angela.adamo at astro.su.se> wrote:
> 
>> Dear all,
>> welcome to our weekly seminar at the astronomy department.
>> The speaker of this week is Dr. Floriane Leclercq from the University of Lyon, France.
>> Title and abstract are available here below and posted on the albanova agenda.
>> 
>> Kind regards,
>> Angela and Alexis
>> 
>> The close gaseous envelop of distant star-forming galaxies : study of the Lya haloes revealed by MUSE
>> 
>> The CGM serves as the interface between galaxies and the larger structures within which they evolve. Thus, studying the environment of galaxies represents a crucial step in understanding the mechanisms governing their formation and evolution. Unfortunately, direct observation of the CGM is often quite difficult, since these regions are very faint. Using the unrivaled sensitivity of the MUSE/VLT instrument, we reported — in Leclercq et al. 2017 — the detection of cold hydrogen gas surrounding 145 low-mass (<1010 M⊙), faint (-15 ≥ MUV ≥ -22) and very distant (3 < z < 6) galaxies emitting Lya photons (forming 80% of the total galaxy sample tested). This sample represents the largest collection ever compiled of individually-detected Lya halos around normal star-forming galaxies observed in an epoch when the Universe was still forming. Our results (i) reinforce the idea that Lya haloes are ubiquitous around high-z galaxies, (ii) reveal a large diversity in the Lya halo properties which (iii) do not show strong and significant correlations with the UV properties of the host galaxies.
>> 
>> In this talk, I will present the main results from this Lya haloes study and introduce our new analysis of the Lya haloes spectral properties (Leclercq et al. in prep). In this work, we look at the evolution of the Lya line profile within the halo in order to better understand the information encoded in the shape of the Lya line. This information can help shed light on the origin of the Lya emission and therefore constrain the gas opacity and kinematics. 
>> 
>> 
>> https://www.albanova.se/event/astronomy-seminar/
>> 
>> 
>> 
>> -------------------------------------------------------
>> Angela Adamo  
>> 
>> Assistant professor
>> Department of Astronomy,
>> Stockholm University and Oskar Klein Centre
>> SE-10691 Stockholm - Sweden
>> tel: +46 (0)8 5537 8556 
>> email: angela.adamo at astro.su.se
>> http://ttt.astro.su.se/~adamo
>> -------------------------------------------------------
>> 
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